B777 A/P roll mode failure in LNAV
Thread Starter
Joined: Jun 2012
Posts: 96
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From: india
B777 A/P roll mode failure in LNAV
i just saw this A/P roll mode behaviour (failure in-flight in LNAV) can someone pls provide a written explanation for this.
it can be simulated anytime anywhere. Looking for a reason that's all.
Joined: Jul 2014
Posts: 344
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From: Germany
goo.gl/ftPnv8
a link to the video for anyone who doesn't like the plugin that can't be resized (not that there are many details to see here but still)
these automatic plugins should have a way to be disabled for a post. sometimes you just want a link not some youtube / twitter / whatever plugin.
a link to the video for anyone who doesn't like the plugin that can't be resized (not that there are many details to see here but still)
these automatic plugins should have a way to be disabled for a post. sometimes you just want a link not some youtube / twitter / whatever plugin.
Joined: Aug 2009
Aviation Qualifications: ATPL
Posts: 616
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From: GPS L INVALID
Wait, you say this can be simulated anytime and anywhere, but you're asking for the reason? I'm not sure I understand what you are asking for. That clicking sounds suspiciously like somebody pushing the NAV switch and activating CDU nav... If this is an actual failure occurring in flight then consult the MAT, a mode failure throwing the AUTOPILOT EICAS message should also leave a maintenance message on the MAT.
Thread Starter
Joined: Jun 2012
Posts: 96
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From: india
STBYRUD - the ONLY SWITCH that is being touched/pressed is HDG SEL and back to LNAV in quick succession as you will see the roll FMA change. I am asking is why LNAV fails after that. It can be re-engaged back to normal. But there is a failure in between. I m asking why. 
